Ruling · Mahānavamī · 1966

Saturday 22 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 409 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Saturday 22 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:00  11:48 madhyāhna ends
10:1210:3611:0011:2411:4812:1212:36

48 of 48 minutes covered

Midday of Sunday 23 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:00  11:48 madhyāhna ends
10:1210:3611:0011:2411:4812:1212:36

0 of 48 minutes covered

Navamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Navamī runs from 02:19 on Sat 22 Oct to 04:11 on Sun 23 Oct.

    1966-10-21T18:18:36Z → 1966-10-22T20:11:29Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 22nd, 11:00–11:48 on the 23rd.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 22nd and 0 of 48 on the 23rd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 24518 s

  5. 05

    Ruling

    Mahānavamī, Daqing, 1966: Saturday 22 October.

    confidence: determinate

Say it like this

In Daqing, Mahānavamī 1966 falls on Saturday 22 October. Navamī runs from 02:19 on Sat 22 Oct to 04:11 on Sun 23 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1966/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 22 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 22 Oct
compat-drikpanchangComparison profileSat 22 Oct
No institution has a recorded ruling for Daqing.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/mahanavami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Navamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 9 Mahanavami (purvaviddha) (In Bengal it is observed as paraviddha covering one muhurta from sunrise).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104. The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceNavamīMadhyāhna 21stCoveredMadhyāhna 22ndCoveredRuled
Los Angeles11:19 → 13:1112:1348 min12:1348 min21 Oct
Chicago13:19 → 15:1112:110 min12:1148 min22 Oct
Jersey City14:19 → 16:1112:170 min12:1748 min22 Oct
Port of Spain14:19 → 16:1111:270 min11:2748 min22 Oct
London19:19 → 21:1112:210 min12:2148 min22 Oct
Durban20:19 → 22:1111:170 min11:1748 min22 Oct
Dubai22:19 → 00:1111:390 min11:3948 min22 Oct
Delhi23:49 → 01:4111:420 min11:4148 min22 Oct
Kolkata23:49 → 01:4110:570 min10:5748 min22 Oct
Singapore01:49 → 03:4111:550 min11:5548 min22 Oct
Sydney04:19 → 06:1111:160 min11:1648 min22 Oct
Suva06:19 → 08:1111:270 min11:2748 min22 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
mahanavami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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